Android Studio中没有检测到的编译支持库 [英] Android Studio not detecting support libraries on Compilation

问题描述

由于Android的工作室将是为Android开发IDE默认情况下，我决定把我现有的项目移植到Android的工作室。该项目stucture似乎有所不同和文件夹在我的项目层次结构如下：

 完整的项目
  - ＆GT; .idea
  - ＆GT;建立
  - ＆GT; Facebook的SDK
  - ＆GT; MainProject
  - ＆GT; ......（其他库）
 的build.gradle
 local.properties
 settings.gradle
 ...
外部库
  - ＆GT; Android的API 8平台
  - ＆GT; Android的API平台18
  - ＆GT; Android的API平台19
  - ＆GT; 1.7的Java
  - ＆GT;支持 -  v4-19.1.0
 

我MainProject具有其中包含项目中使用不同的罐子一个libs文件夹。它令人惊讶的不包含Android的支持-V4罐子这是present在我的Eclipse项目。因此，它似乎是外部库在根文件夹必须照顾它。

但导入后，当我试图编译该项目开始呕吐符号找不到错误的所有与Android的支持库某些类。

有关如：Android Studio中的自动完成让我建议的NotificaitonCompat从android.support.v4.app.NotificationCompat，但是当我尝试编译我的项目模块它说：

错误：（17 30）错误：无法找到符号类NotificationCompat错误：执行失败的任务：应用程序：compileDebugJava'>编译失败;详情请参见编译器错误输出。

这发生在许多其他类也为相同的支持库。我试图插入一个罐子，并在的build.gradle为MainProject变化相同，但错误依然存在。

我甚至尝试重新启动，并再次生成项目，但没有改变。

编辑：
我附上的摇篮文件MainProject内

的build.gradle在MainProject模块

 应用插件：'com.android.application安卓{
compileSdkVersion 19
buildToolsVersion21.1.2defaultConfig {
    的applicationIDpackage.app
    8的minSdkVersion
    targetSdkVersion 19
}buildTypes {
    发布 {
        minifyEnabled假
        proguardFiles getDefaultProguardFile（'proguard的-android.txt'），'proguard的-rules.txt
    }
}
}配置{
所有* .exclude组：com.android.support'，模块：支持-V4
}依赖{
编制项目（'：facebookSDK'）
编制项目（'：库）
编制项目（'：凌空）
编译com.google.android.gms：播放服务：+'
编译com.actionbarsherlock：actionbarsherlock：4.4.0@aar
编译com.android.support:support-v4:19.1.0
编译文件（库/ FlurryAnalytics_3.3.3.jar'）
编译文件（库/通用图像装载-1.8.4.jar'）
....
}
 

解决方案

您构建文件的此部分：

 配置{
所有* .exclude组：com.android.support'，模块：支持-V4
}
 

告诉构建系统忽略支持-V4，这就是为什么它没有编制。删除。

在构建文件，你有这样的，这是包括支持正确的方式：

 编译com.android.support:support-v4:19.1.0
 

如果您在库您的任何模块的目录支持库jar文件，将其删除，并确保你提到的这种方式 - 如果包括图书馆作为一个罐子，你可能会碰到那里的罐子被包含多次，这将导致一个错误DEX的一个问题。

Since Android Studio is going to be default IDE for Android Development, I decided to migrate my existing project into Android-studio. The project stucture seems different and the hierarchy of folders in my Project is as follows:

Complete Project
 ->.idea
 -> build
 -> Facebook SDK
 -> MainProject
 -> ... (Other Libraries)
 build.gradle
 local.properties
 settings.gradle
 ...
External Libraries
 -> Android API 8 Platform
 -> Android API 18 Platform
 -> Android API 19 Platform
 -> 1.7 Java
 -> support-v4-19.1.0

My MainProject has a libs folder which contains different jars used within the project. It surprisingly does not contain the android-support-v4 jar which was present in my eclipse project. So, it seems that the external Libraries folder at the root must take care of it.

But after import, when I tried to compile the project started throwing "Symbol not found error" for Certain Classes all relating to android support library.

For Eg: The auto complete in Android Studio gives me suggestion for NotificaitonCompat from android.support.v4.app.NotificationCompat, but when I try to compile my Project Module it says

Error:(17, 30) error: cannot find symbol class NotificationCompat Error:Execution failed for task ':app:compileDebugJava'.> Compilation failed; see the compiler error output for details.

This happens in many other classes too for the same support library. I tried to insert a jar and changed the same in the build.gradle for the MainProject, but the error persists.

I even tried restarting and building the project again, but nothing changed.

EDIT: I am attaching the Gradle file inside the MainProject

build.gradle in MainProject Module

apply plugin: 'com.android.application'

android {
compileSdkVersion 19
buildToolsVersion "21.1.2"

defaultConfig {
    applicationId "package.app"
    minSdkVersion 8
    targetSdkVersion 19
}

buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
    }
}
}

configurations {
all*.exclude group: 'com.android.support', module: 'support-v4'
}

dependencies {
compile project(':facebookSDK')
compile project(':library')
compile project(':volley')
compile 'com.google.android.gms:play-services:+'
compile 'com.actionbarsherlock:actionbarsherlock:4.4.0@aar'
compile 'com.android.support:support-v4:19.1.0'
compile files('libs/FlurryAnalytics_3.3.3.jar')
compile files('libs/universal-image-loader-1.8.4.jar')
....
}

解决方案

This part of your build file:

configurations {
all*.exclude group: 'com.android.support', module: 'support-v4'
}

is telling the build system to ignore support-v4, which is why it isn't compiling. Remove that.

In your build file, you have this, which is the correct way to include support:

compile 'com.android.support:support-v4:19.1.0'

If you have the support library jar file in the libs directory of any of your modules, remove it and make sure you refer to it this way -- if you include the library as a jar, you're likely to run into a problem where the jar is included multiple times which will result in a dex error.

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